Dell OptiPlex GX240 Systems User's Guide
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CAUTION: Before you open the computer cover, see "CAUTION: Safety Instructions." |
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NOTE: On the small form-factor and small desktop computers, remove the stand before you open the computer cover. On the small mini- tower computer, place the computer on its side before you open the cover. |
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NOTICE: Do not open the cover if the computer is on the edge of a desk or table. Doing so may cause the computer to tip over and fall. Make sure that the computer is situated so that there is at least 12 inches of desk- or table-top for the cover to rest on. |
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NOTICE: Open the cover slowly to ensure that you do not damage any cables. |
1 | security cable slot |
2 | padlock ring |
3 | release buttons (one on each side) |
1 | security cable slot |
2 | padlock ring |
3 | release buttons (one on each side) |
1 | security cable slot |
2 | padlock ring |
3 | release buttons (one on each side) |
Your computer provides expansion slots for the following cards:
All computers provide an expansion slot for one 32-bit accelerated graphics port (AGP) 4x card (low-profile in the small form-factor and small desktop computers) operating at 1.5 volts (V).
1 | AGP 4x card |
2 | low-profile 32-bit PCI card |
3 | 32-bit PCI card |
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NOTE: To meet PC99 requirements, your Dell computer uses only PCI expansion slots. Industry- Standard Architecture (ISA) expansion cards are not supported. |
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NOTICE: Before disconnecting a device from the computer or removing a component from the system board, verify that the standby power light on the system board has turned off. |
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CAUTION: Before you perform this procedure, see "CAUTION: Safety Instructions." |
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NOTICE: Before disconnecting a device from the computer, wait 10 to 20 seconds after disconnecting the computer from its electrical outlet. Before removing a component from the system board, verify that the standby power light on the system board has turned off. To locate this light, see "System Board Components." |
1 | card-edge connector |
2 | expansion card |
3 | hinged lever |
4 | retention arm |
5 | expansion-card connector |
1 | lever | 5 | card-edge connector |
2 | retention arm | 6 | expansion-card connector |
3 | filler bracket | 7 | riser board |
4 | expansion card | 8 | expansion-card cage |
1 | expansion card |
2 | card-edge connector |
3 | expansion-card connector |
4 | retention arm |
5 | lever |
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NOTE: The AGP expansion slot only supports 1.5-V cards. |
If necessary, disconnect any cables connected to the card. Grasp the card by its top corners, and ease it out of its connector.
See the documentation that came with the expansion card for information on configuring the card, making internal connections, or otherwise customizing it for your computer.
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CAUTION: Some network adapters automatically start the computer when they are connected to a network. To guard against electrical shock, be sure to unplug your computer from its electrical outlet before installing any expansion cards. Verify that the standby power light on the system board is off. To locate this light, see "System Board Components." |
If the expansion card is full-length, insert the end of the card into the expansion-card guide bracket as you lower the card toward its connector on the system board. Insert the card firmly into the expansion-card connector on the system board.
1 | bracket within slot |
2 | bracket caught outside of slot |
3 | fully seated card |
4 | not fully seated card |
Press the arm into place, securing the expansion card(s) in the computer.
1 | filler bracket |
2 | alignment guide |
3 | alignment bar |
4 | retention arm |
See the documentation for the card for information about the card's cable connections.
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NOTICE: Do not route expansion card cables over or behind the expansion cards. Cables routed over the expansion cards can prevent the computer cover from closing properly or cause damage to the equipment. |
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NOTE: After you open and close the cover, the chassis intrusion detector causes the following message to appear on the screen at the next computer start-up: |
ALERT! Cover was previously removed.
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NOTE: If a setup password has been assigned by someone else, contact your network administrator for information on resetting the chassis intrusion detector. |
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NOTE: Problems may arise if two expansion cards are trying to use the same resources: memory, I/O addresses, and IRQs. To avoid this type of conflict, see "Interrupt Assignment Conflicts" and the documentation that came with the card for more information. |
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CAUTION: Before you perform this procedure, see "CAUTION: Safety Instructions." |
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NOTICE: Before disconnecting a device from the computer, wait 10 to 20 seconds after disconnecting the computer from its electrical outlet. Before removing a component from the system board, verify that the standby power light on the system board has turned off. To locate this light, see "System Board Components." |
If you need a filler bracket, contact Dell.
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NOTE: Installing filler brackets over empty card-slot openings is necessary to maintain Federal Communications Commission (FCC) certification of the computer. The brackets also keep dust and dirt out of your computer. |
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NOTE: After you open and close the cover, the chassis intrusion detector causes the following message to appear on the screen at the next computer start-up: |
ALERT! Cover was previously removed.
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NOTE: If a setup password has been assigned by someone else, contact your network administrator for information on resetting the chassis intrusion detector. |
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NOTE: The small form- factor and small desktop computers support low- profile AGP cards. |
On the small desktop computer, press the indented tab with your thumb at an angle toward the system board until you release the tab. Continue holding the lever and pull the lever up.
AGP Slot Filler Bracket RemovalSmall Form-Factor Computer
1 | hinged lever |
AGP Slot Filler Bracket RemovalSmall Desktop Computer
1 | hinged lever |
2 | indented tab |
AGP Slot Filler Bracket RemovalSmall Mini-Tower Computer
1 | hinged lever |
1 | AGP card |
2 | system board |
3 | AGP card clip |
4 | AGP card clip tab |
5 | AGP card clip lever |
6 | AGP card notch |
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CAUTION: Before you perform this procedure, see "CAUTION: Safety Instructions." |
1 | expansion-card cage |
Expansion-Card Cage Replacement
1 | expansion-card cage |
The telephony applications programming interface (TAPI) system-board connector uses a 4-pin cable to interface your internal TAPI-compliant expansion card with the audio system in your computer. To locate the TAPI system-board connector, see "System Board Components." Your computer supports TAPI-compliant cards using the standard TAPI connector (labeled TELE). For example, you can connect your modem to the TAPI connector and then use your audio speakers and microphone as a speakerphone. The microphone carries your voice into the computer and then through the TAPI system board connector to your modem card. The caller's voice enters through the modem card to the TAPI system board connector and then out to the speakers. You can also use this configuration to record and play sound files over the phone.
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NOTE: See the documentation that came with the TAPI-compliant expansion card for more information on using TAPI devices and to verify the card works with your computer. |
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CAUTION: Before you perform this procedure, see "CAUTION: Safety Instructions." |
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NOTICE: Before disconnecting a device from the computer, wait 10 to 20 seconds after disconnecting the computer from its electrical outlet. Before removing a component from the system board, verify that the standby power light on the system board has turned off. To locate this light see, "System Board Components." |
See the manufacturer's documentation for more information.
To locate the TAPI connector on the system board, see "System Board Components."
To locate the TAPI connector on the expansion card, see the manufacturer's documentation.
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NOTE: If enabled, the Chassis Intrusion option causes the following message to be displayed at the next system start- up: ALERT! Cover was previously removed. |
See the manufacturer's documentation and your Windows documentation for more information.
You can install a TAPI-compliant sound card that has a standard TAPI connector. For example, you can connect your modem to the TAPI sound card connector and then use the audio capabilities as a speakerphone.
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CAUTION: Before you perform this procedure, see "CAUTION: Safety Instructions." |
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NOTICE: Before disconnecting a device from the computer, wait 10 to 20 seconds after disconnecting the computer from its electrical outlet. Before removing a component from the system board, verify that the standby power light on the system board has turned off. To locate this light, see "System Board Components." |
See the manufacturer's documentation for more information.
To locate the TAPI connector on the sound card, see the manufacturer's documentation.
To locate the TAPI connector on the expansion card, see the manufacturer's documentation.
See the manufacturer's documentation and your Microsoft® Windows® documentation for more information.
You can increase memory up to 1 gigabyte (GB) by using synchronous dynamic random-access memory (SDRAM) dual in-line memory modules (DIMMs). The system board illustration shows the location of the DIMM sockets on the system board. (DIMMs may either be error checking and correction [ECC] or non-error checking and correction [non-ECC]. However, all DIMMs must be the same type of memoryeither ECC or non-ECC.)
When you add memory, you may install DIMMs in either socket. For optimum operation, Dell recommends that you install a DIMM in socket A first (closest to the processor) before installing a DIMM in socket B.
| NOTICE: Before you install new memory modules, download the most recent BIOS for your computer from the Dell Support website at support.dell.com. |
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CAUTION: To avoid the possibility of electric shock, turn off the computer and any devices, disconnect them from their electrical outlets, and then wait 10 to 20 seconds before you open the computer cover. Also, before you upgrade memory, see the other precautions in "CAUTION: Safety Instructions." |
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NOTICE: To avoid damage to the memory module, press the module straight down into the socket with equal force applied at each end of the module. |
1 | socket |
2 | slot |
3 | securing clip |
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NOTE: After you open and close the cover, the chassis intrusion detector causes the following message to appear on the screen at the next computer start-up: |
ALERT! Cover was previously removed.
You need to reset the chassis intrusion detector.
The computer detects that the new memory does not match the existing configuration information and generates the following message:
The amount of system memory has changed.
Strike the F1 key to continue, F2 to run the setup
utility
The computer should have already changed the value of System Memory to reflect the newly installed memory. Verify the new total. If it is correct, skip to step 7.
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NOTE: If a setup password has been assigned by someone else, contact your network administrator for information on resetting the chassis intrusion detector. |
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CAUTION: Before you perform this procedure, see the precautions in "CAUTION: Safety Instructions." |
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NOTICE: To avoid damage to the memory module, press the securing clips with equal force applied at each end of the socket. |
To remove a DIMM, press the securing clips at each end of the socket outward simultaneously until the DIMM pops out slightly from the socket.
1 | securing clips (2) |
2 | socket |
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NOTE: Dell recommends that only a technically knowledgeable person perform the following procedure. |
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CAUTION: To avoid the possibility of electric shock, turn off the computer and any devices, disconnect them from their electrical outlets, and then wait 10 to 20 seconds before you open the computer cover. Also, before you upgrade the microprocessor, see the other precautions in "CAUTION: Safety Instructions." |
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CAUTION: The microprocessor cooling fan/heat-sink assembly can get extremely hot. Be sure the assembly has had sufficient time to cool before you touch it. |
Airflow Shroud AdjustmentSmall Mini-Tower Computer
1 | airflow shroud |
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NOTICE: Before you remove the heat sink, gently rock the heat sink and then slightly twist it as you lift it from the system board. |
For both securing clips on a small mini-tower computer, press down on the metal securing clip latches to release the clips from the retention base, and then lift the clips out of the tabs on the retention base and away from the heat sink.
Heat-Sink RemovalSmall Mini-Tower Computer
1 | latches (2) |
2 | securing clips (2) |
3 | heat sink |
4 | retention base |
5 | ZIF socket |
6 | tabs (3) |
On small form-factor and small desktop computers, the heat sink is attached to the blower. Remove the securing clips to remove the heat-sink/blower assembly.
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NOTICE: Before you remove the heat sink, gently rock the heat sink and then slightly twist it as you lift it from the system board. |
Heat-Sink/Blower Assembly RemovalSmall Form-Factor and Small Desktop Computers
1 | latches (2) |
2 | securing clips (2) |
3 | blower |
4 | screws (2) |
5 | heat sink |
6 | retention base |
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NOTICE: Lay the heat sink down with the thermal grease facing upward. Do not lay the heat sink down with the thermal grease touching the work surface. |
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NOTICE: Do not discard the original heat sink and securing clips unless you are installing a microprocessor upgrade kit from Dell. If you are not installing a microprocessor upgrade kit from Dell, reuse the original heat sink, blower, and securing clips when installing your new microprocessor. |
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NOTE: Do not discard the blower; reuse the blower. Your microprocessor upgrade kit from Dell includes only a replacement heat sink and two replacement securing clips. |
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NOTICE: Be careful not to bend any of the pins when you remove the microprocessor from its socket. Bending the pins can permanently damage the microprocessor. |
Your microprocessor socket is a zero insertion force (ZIF) socket with a lever-type handle that secures the microprocessor in, or releases it from, the socket.
1 | release lever |
2 | microprocessor |
3 | ZIF socket |
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NOTICE: Ground yourself by touching an unpainted metal surface on the back of the computer. |
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NOTICE: Be careful not to bend any of the pins when you unpack the microprocessor. Bending the pins can permanently damage the microprocessor. |
If any of the pins on the microprocessor appear to be bent, see "Getting Help" for instructions on obtaining technical assistance.
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NOTE: You must identify the pin-1 corner to correctly position the microprocessor. |
1 | pin-1 corners of microprocessor |
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NOTICE: You must position the microprocessor correctly in the socket to avoid permanent damage to the microprocessor and the computer when you turn on the computer. |
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NOTICE: When you place the microprocessor in the socket, be sure that all of the pins go into the corresponding holes on all sides of the socket. Be careful not to bend the pins. |
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NOTICE: Ground yourself by touching an unpainted metal surface on the back of the computer. |
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NOTICE: If you are installing a microprocessor replacement kit from Dell, return the microprocessor to Dell in the same package in which your replacement kit was sent. |
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NOTICE: If you are not installing a microprocessor upgrade kit from Dell, reuse the original blower/heat-sink assembly and securing clips when replacing the microprocessor. |
As the computer boots, it detects the presence of the new microprocessor and automatically changes the configuration information in system setup.
To replace a front panel insert, follow the "Removing Front Panel Inserts" procedures in reverse.
This computer may support the following internal drives:
1 | CD/DVD drive |
2 | floppy drive |
3 | hard drive |
1 | CD/DVD drive |
2 | floppy drive |
3 | hard drive |
1 | CD/DVD drive(s) |
2 | floppy drive(s) |
3 | hard drive(s) |
All IDE devices require that you configure the cable select setting, which assigns master and slave status to devices according to their position on the interface cable. You usually configure a drive for cable select by setting a jumper or switch, depending on the drive. Refer to the drive documentation in your upgrade kit for information on configuring devices for the cable select setting. When you connect two IDE devices to a single IDE interface cable and configure them for the cable select setting, the device attached to the last connector on the interface cable is the master or boot device (drive 0), and the device attached to the middle connector on the interface cable is the slave device (drive 1).
With the two IDE interface connectors on the system board, your computer supports up to two IDE devices. IDE hard drives should be connected to the IDE interface connector labeled "IDE1." (Always connect CD/DVD drives to the IDE interface connector labeled "IDE2.")
When you install a drive, you connect two cablesa DC power cable and an interface cableto the back of the drive. Your drive's power input connector (to which you connect the DC power cable) resembles the following connector.
1 | power cable |
2 | power input connector |
The drive's interface connector is a card-edge connector or a header connector, as shown in the following figure.
1 | header connector |
2 | colored stripe on the cable |
3 | interface cable |
When you attach the interface cable to a drive, be sure to match the colored stripe on the cable to pin 1 of the drive's interface connector. For the location of pin 1 on the drive's interface connector, see the documentation that came with the drive.
When you disconnect an interface cable from the system board, be sure to press in on the locking tabs on the cable connector before you disconnect the cable. When you attach an interface cable to the system board, be sure that the locking tabs snap into place so that the cable is firmly attached to the connector on the system board.
Most interface connectors are keyed for correct insertion; that is, a notch or a missing pin on one connector matches a tab or a filled-in hole on the other connector. Keyed connectors ensure that the pin-1 wire in the cable (indicated by the colored stripe along one edge of the cable) goes to the pin-1 end of the connector. The pin-1 end of a connector on a board or a card is usually indicated by a silk-screened "1" printed directly on the board or card.
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NOTICE: When you connect an interface cable, do not reverse the interface cable (do not place the colored stripe away from pin 1 of the connector). Reversing the cable prevents the drive from operating and could damage the controller, the drive, or both. |
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CAUTION: To avoid the possibility of electric shock, turn off the computer and any devices, disconnect them from electrical outlets, and then wait 10 to 20 seconds before you open the computer cover. Also, before you install a drive, see the other precautions in "CAUTION: Safety Instructions." |
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NOTICE: Ground yourself by touching an unpainted metal surface on the back of the computer. |
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NOTICE: To avoid damage to the drive, do not set it on a hard surface. Instead, set the drive on a surface, such as a foam pad, that sufficiently cushions it. |
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NOTE: Your computer's hard drive may or may not have a plastic shroud cover. Operating the computer without a hard- drive shroud does not affect its performance. |
1 | power cable |
2 | hard drive cable |
1 | hard drive cable |
2 | power cable |
1 | power cable |
2 | hard drive cable |
1 | notch in drive rail |
2 | tabs (2) |
1 | tabs (2) |
2 | hard drive |
1 | tabs (2) |
2 | hard drive |
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CAUTION: To avoid the possibility of electric shock, turn off the computer and any devices, disconnect them from electrical outlets, and then wait 10 to 20 seconds before you open the computer cover. Also, before you install a drive, see the other precautions in "CAUTION: Safety Instructions." |
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NOTICE: Ground yourself by touching an unpainted metal surface on the back of the computer. |
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NOTICE: When you unpack the drive, do not set it on a hard surface, which may damage the drive. Instead, set the drive on a surface, such as a foam pad, that sufficiently cushions it. |
1 | drive |
2 | bracket rails (2) |
3 | screws (4) |
1 | power cable |
2 | IDE cable |
3 | IDE1 connector |
1 | power cable |
2 | IDE cable |
3 | IDE1 connector |
1 | power cable |
2 | IDE cable |
3 | IDE1 connector |
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NOTICE: To avoid possible damage to the computer, you must match the colored stripe on the hard-drive data cable with pin 1 on the hard drive (IDE1) connector and with the system board interface connector (IDE1). |
To locate the IDE connector 1 (IDE1) on the system board, see "System Board Components."
See the documentation for your operating system for instructions.
For instructions, see the documentation that came with your operating system.
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NOTICE: Ground yourself by touching an unpainted metal surface on the back of the chassis. |
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NOTICE: When you unpack the drive, do not set it on a hard surface, which may damage the drive. Instead, set the drive on a surface, such as a foam pad, that sufficiently cushions it. |
These rails are not attached to the inside of the hard-drive bay with screws. To remove the rails, gently pull the rails up and out of the bay.
Ensure that the rail tabs are positioned at the back of the hard drive.
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NOTICE: Do not install a drive into the lower hard-drive bay until you remove the green drive rails from inside the lower hard-drive bay. |
1 | rail tabs (2) |
2 | second hard drive in upper bay |
3 | first hard drive in lower bay |
4 | hard drive cage |
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NOTICE: Match the colored strip on the cable with pin 1 on the drive. |
Locate the extra connector on the drive cable that is attached to the first hard drive and attach the connector to the second hard drive.
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CAUTION: To avoid the possibility of electric shock, turn off the computer and any devices, disconnect them from their electrical outlets, and then wait 10 to 20 seconds before you open the computer cover. Also, before you install a drive, see the other precautions in "CAUTION: Safety Instructions." |
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NOTICE: To avoid possibly damaging the drive by electrostatic discharge (ESD), ground yourself by touching an unpainted metal surface on the back of the computer. |
Check the documentation that accompanied the drive to verify that the drive is configured for your computer. Change any settings necessary for your configuration.
You usually configure a drive for cable select by setting a jumper or switch, depending on the drive. For instructions on configuring the cable select setting, see the documentation that accompanied the drive.
1 | floppy drive cable |
2 | tab |
3 | interposer board |
4 | system board floppy drive connector (DSKT) |
1 | floppy drive cable |
2 | lever |
1 | power cable |
2 | floppy drive cable |
3 | floppy drive connector |
1 | power cable |
2 | floppy drive cable |
3 | floppy drive connector |
1 | sled tab |
2 | sled |
1 | connector notch |
2 | interposer board alignment hole |
3 | floppy-drive cable |
4 | lever |
1 | drive |
2 | bracket rails (2) |
3 | screws (4) |
1 | power cable |
2 | floppy drive cable |
3 | floppy drive connector |
1 | power cable |
2 | floppy drive cable |
3 | floppy drive connector |
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CAUTION: To avoid the possibility of electric shock, turn off the computer and any devices, disconnect them from their electrical outlets, and then wait 10 to 20 seconds before you open the computer cover. Also, before you install a drive, see the other precautions in "CAUTION: Safety Instructions." |
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NOTICE: To avoid possibly damaging the drive by electrostatic discharge (ESD), ground yourself by touching an unpainted metal surface on the back of the computer. |
Check the documentation that accompanied the drive to verify that the drive is configured for your computer. Change any settings necessary for your configuration.
You usually configure a drive for cable select by setting a jumper or switch, depending on the drive. For instructions on configuring the cable select setting, see the documentation that accompanied the drive.
1 | interposer board |
1 | power cable |
2 | audio cable |
3 | CD/DVD drive cable |
4 | CD/DVD drive connector |
1 | power cable |
2 | audio cable |
3 | CD/DVD drive cable |
4 | CD/DVD drive connector |
1 | drive |
2 | bracket rails (2) |
3 | screws (4) |
If your computer came with a CD drive, use the spare connector on the existing interface cable. Otherwise, use the IDE interface cable provided in the drive kit.
Ensure that the interposer board tab fits securely under the notch on the inside of the cover.
Interposer Board ConnectionSmall Form-Factor Computer
1 | interposer board |
1 | power cable |
2 | audio cable |
3 | CD/DVD drive cable |
4 | CD/DVD drive connector |
1 | power cable |
2 | audio cable |
3 | CD/DVD drive cable |
4 | CD/DVD drive connector |
A 3.0-V CR2032 lithium coin-cell battery installed on the system board maintains system configuration, date, and time information in a special section of memory.
The operating life of the battery can extend up to 10 years. The battery may need replacing if an incorrect time or date is displayed during the boot routine along with a message such as:
Time-of-day not set - please run SETUP program
or
Invalid configuration information -
please run SETUP program
or
Strike the F1 key to continue,
F2 to run the setup utility
To determine whether you need to replace the battery, reenter the time and date through system setup and exit the program properly to save the information. Turn off your computer and disconnect it from the electrical outlet for a few hours, and then reconnect the computer, turn it on, and enter system setup. If the date and time are not correct in system setup, replace your battery.
You can operate your computer without a battery; however, without a battery, the configuration information is erased if the computer is turned off or unplugged from the electrical outlet. In this case, you must enter system setup and reset the configuration options.
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CAUTION: There is a danger of the new battery exploding if it is incorrectly installed. Replace the battery only with the same or equivalent type recommended by the manufacturer. Discard used batteries according to the manufacturer's instructions. |
If the settings are lost while you are replacing the battery, see your written or printed copy of the configuration information to restore the correct settings.
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CAUTION: Before you open the computer cover, see "CAUTION: Safety Instructions." |
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NOTICE: If you pry the battery out of its socket with a blunt object, be careful not to touch the system board with the object. Make certain that the object is inserted between the battery and the socket before you attempt to pry out the battery. Otherwise, you may damage the system board by prying off the socket or by breaking circuit traces on the system board. |
See the system board figure for the location of the battery.
1 | battery |
2 | battery socket |